Type-writing machine.



H. L. & E. W. JOHNSON.

TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 1. ms.

Patented Nov. 28, 1916.

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WWW-5555: INVENTEIR'S- {7 M iM L/LM THEIRATTURNEY H. L. & E. W. JOHNSON.

TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 1, I915.

1,206,? 1 Patented Nov. 28, 1916.

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W|TNE55E3 INVENTIIIRS THEIR ATT URNEY H. L. & E. W. JOHNSON. 4

TYPE WRITING MACHINE.

APPLICATION FILED SEPT. I. 1915.

1,206,714. Patented Nov. 28,1916.

4 SHEETS SHEET 4.

WITNEE'EIE'i ENVENTURSQ THEIRATTURNEY ED STATES PATENT OFFICE.

HERBERT II. JOHNSON, 0F FAIRFIELD, AND EDWIN W. JOHNSON, OF BRIDGEPORT,.CONNECTICUT, ASSIGNORS TO REMINGTON TYPEWRITER COMPANY, 'OF ILION, NEW

YORK, A CORPORATION OF .NEW YORK.

' TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Nov. 28, 1916.

To all whom it may concern:

Be it known that we, HERBERT L. J0HN- SON and EDWIN W. JOHNSON, citizensof the United States, and residents, respectively, of Fairfield, in the.county of Fairfield and State of Connecticut, and Bridgeport, in thecounty of Fairfield and State of Connecticut, have invented certain newand useful Improvements in Type-Writing Machines, of which the followingis a specification.

Our present invention relates to universal bar mechanism for typewritingmachines, and its principal object is to provide new and improvedmechanism of the character specified.

To the above and other ends our invention consists in the features ofconstruction, combinations of devices, and arrangements of pantshereinafter described and particularly pointed out in the claims.

While our invention was especially designed for application to the YostNo. 20

typewriting machine, and is illustrated in the drawings as applied tosaid machine, it is to be understood that, our said invention is capableof embodiment in other styles of writing machines. I

In the accompanying drawings showing the preferred form of ourinvention, Figure 1 is a fragmentary front to rear verticalsectionalview of a Yost No. 20 typewriting machine embodying our invention. Fig.2 is a fragmentary vertical sectional view taken on a plane indicated bythe dotted line w in Fig; 1, and looking forward. Fig. 3 is afragmentary vertical sectional view corresponding to Fig. 1 but showingthe type bar support shifted and one of the type bars in printingposition. Fig. 4 is a side view of the universal bar mechanism and oneof the type actions-shown in lower case printing position. Fig. 5 is afragmentary perspective view of the universal bar mechanism. As shown inFigs. 1 and 2, the main frame of themachine comprises side plates 1, arear connecting cross plate 2, and top plate sections 3 and 4. Fixed atopposite sides of a depressed portion in the to of the main frame areoppositely grooved trackways 5,

which cooperate through anti-friction rollers Y 6 with the groovedbottom bar 7 of a traveling carriage which further comprises end bars orframes 8 and connecting cross bars 9.

J ournaled on the frames 8 is a rotary platen- .operation of theescapement. for rocking the bar are novel, comprising 10. The carriageis urged constantly leftward by a motor or spring drum (not shown) ofordinary construction and its leftward movements are controlled bycarriage feeding devices comprising a feed rack 11 mounted on arms 12pivoted to and depending from lugs on the bar 7 The feed rack 11v of theshaft and is prevented from downward displacement by a circular flangeor plate 14*" rigid with said shaft. The hub portion near its upper endis formed with a Set of ratchet teeth 20 providing a ratchet wheel orclutch member with which cooperates a gravity pawl or clutch member 21pivoted on a sleeve 22, which is splined to the shaft 14. Theconstruction is such that the sleeve 22 is forced always to rotate withthe shaft 14, although it may be slid up and down on the shaft. Normallythe clutch members 21 and 20 are engaged so that rotary motion on theshaft 14 is transmitted through the sleeve 22 and clutch members to theescapement' wheel 18. The sleeve 22 may he slid upward in the usual wayto separate the clutch members, permitting the shaft 14 to rotateindependently of the escapement wheel 18, thus releasing the carriage.Cooperative with the escapement wheel 18 are escape ment dogs 23 and 24which are supported on an arm 25 integral with and ro ecting rearwardlyfrom the middle portionof a rocking bar 26 provided with angularlydisposed end portions 27 (Fig. 5), which are engaged by pivots 28secured one at each side of the base of the frame,-the bar 26 beingadapted to rock on said pivots 'to efi'ect'an The means essentialfeatures of our present invention and will be hereinafter described indetail.

The type actions comprise each a key lever 29 pivoted on a rod 30mounted on a stationary support 31 and provided with a fing'er key atthe forward end. A link 32 connects the key lever with a sub-lever 33pivoted on a hanger 34 secured to a segment or support 35. The sub-leveris connected by a pull link 36 with a second sub-lever or driving member37 pivoted on a rod 38 carried by a segment or support 39. A draw spring36- is connected at one end to the member 37 and at the other end to thelink 36. Pivoted to the driving member 37 at 40 is a type bar 41, theforward end of which is pivotally connected to one end of a guide link42 that is pivoted at its opposite end on a wire or rod 43 supported ona segment or support 44. The opposite or rear end of each type bar isprovided with a type block 45 having two types 46 and 47 and restsnormally against an mking pad 48 mounted on a container 49 which issecured to the segment 39. The driving levers act against pins 41 on thetype bars. The sets of type bars 41, driving levers 37 and sublevers 33are arranged in arcs of circles which are concentric with theirsupporting segments. .The segments or supports 39 and 44 are rigidlyconnected at their ends by parallel cross portions or bars 50 preferablycast integral with said segments and having downward extensions or arms51 that are pivotally connected at their lower ends at 52 to arms 53pivoted at 54 in the sides of the main frame. The arms 53 are connectedby a cross rod 55 which with said levers constitute a rigid pivotallysupported frame. The pivots 52 are extended inward to receive the upperends of links 56 that at their lower ends are connected to shift levers57 pivoted at their rear ends at 58 to the sides of the base, each lever57 being provided at its front end with a shift key 59. Each arm 51 isprovided with an upper laterally extending stop 60 and a lower stop 61,these stops being adapted to cooperate with stationary stops 62 and 63to limit the shifting movements of the combined segments 39, 44.Normally the upper stops 60'are maintained in contact with theircoiiperating stationary frame stops 62 by coiled springs 64, thesesprings being vertically arranged and connected at their upper ends tothe bars 50, the lower ends of said springs being looped over the reararms or end portions 53 of the arms 53, said portions beingcurved upwardand rearward to form hook-like extensions. When one of the shift keys 59is depressed it operates through the associate link 56 to swing down theframe 53, 55, and lower the type action support 39, 44. This support isconfined to a parallel or substantially vertical movement through theframe 53, 55 controlling the lower ends of the extensions 51, the upperportion of said support being similarly.

guided and controlled bv links or arms 65 pivoted at 66 at their frontends to the sides of the main frame and at their rear ends at,

59 is depressed, lowering the support 39,,

44 until it is arrested by the stops 61 engaging with the stops 63, thismovement of the support bringing the outer or upper case types 47 intouse when the associate printing keys are actuated. The segment 35 whichsupports the sub-levers 33 is also shifted during the case shiftingoperation but its movement is forward instead of downward, in order thatthe downward movement of the type bar support proper may be effectedwithout depressing the key levers or disarranging the relationship amongthe elements comprised in the type actions. This forward movement of thesegment 35 is effected in part by links 68 that engage in horizontalstationary guide ways 72 in the inner sides of the side plates 1. Thelower middle portion of the segment 35 is connected by a link 73 with acentral lug on the segment 39, the link 73 cotiperating with the links68 to guide and control the segment 35 and give it a movement at rightangles to the shifting movement of the segments 39 and 44.

Secured to the segment 35 is a plate 74 having projections over whichare hooked the upper ends of the key lever restoring springs 75, thelower ends of said springs being connected to the key levers. This plateparticipates in the back and forth shifting at their outer ends beingpivoted to stationary lugs and cotiperating to prevent lateral vibrationor displacement of the shiftable type bar support.

Means are provided for locking the type bar support and. type bars downin their lower or capital letter position, said means comprising, asillustrated in Figs. 1 and 3, an upright lever 82 pivoted at 83 to thelefthand shift lever 57, the upper end of said lever 82 being providedwith a key 84 and 'at its lower end terminating in a hook 85 which isadapted to coiiperate with a fixed abutment 86. Normally the lever 82 ismain tained in the Fig. 1 position by a coiled spring 87 which isanchored to the lever 57 and tends to maintain a lateral stop pin 88 onthe lever 82 in contact with the under edge of the lever 57. Ondepressing the key 84 the left-hand shift key lever is operated,shifting the parts as when the key 59 is actuated, but with thedifference that as soon as the hook 85 passes below the abutment 86 thespring 87 will be overcome and the lever 82 turned on its pivot, causingthe hook to engage with the bottom of the abutment 86, as in Fig. 3, tohold the parts locked down. A'release or unlocking of the parts iseffected by pressing down on the left-hand shift key 5 The parts as thusfar described are like, or substantially like, those found in the No. 20Yost typewriting machine.

Our novel universal bar construction comprises a universal bar proper 89which is of sheet metal, angular in cross section and curved to conformto the curvature of the top portion of the segmental support 39, saiduniversal bar 89 being arranged above said segment and so that itsforward edge is above the pivot rod 38, when in position to be actuatedby shoulders 37 on the driving levers 37. The universal bar 89 is sosupported as that it may shift down and up when said segment is shifted,the mounting .of said universal bar permitting its movement back andforward independently of movement by the segment in both case positionsunder actuation of the driving levers 37 when the printing keys areoperated. The supports of the universal bar 89 comprise a pair of sheetmetal arms 90 riveted or otherwise rigidly secured to the rear portionof the universal bar near its ends and projecting rearward therefrom,and a central arm 91 riveted to the middle of the universal bar and alsoprojecting to the rear. The arms 90 and 91 are made separate from theuniversal bar 89 for convenience of manufacture but are in effect partsof said bar. The arms 90 terminate in ears which are pivotally connectedat 92 to the upstanding arms of bell cranks 93, which are fulcrumed at94 on angular brackets 95, said brackets being secured by screws 96 tothe rear face of the segment 39. The other arms of the bell cranks 93project rearward and have pivotally connected to them at 97 the upperends of depending links 98, the lower ends of said links being pivotallyconnected at 99 to horizontal arms 100 fixed to and extending rearwardfrom a transverse rock shaft 101 near its ends, said rock shaft beingpivotally supported in the lower end portions of the brackets 95. Ateach side there is a coiled spring 102 attached at one end to one of therocker arms 100 and at the other end to the neighboring bracket 95,

thetwo springs serving to restore the movable parts including theuniversal bar after actuation. The middle arm 91terminates in adownwardly extending ear which is pivotally connected at 103 to theupstanding arm of a lever 104 provided with a hub portion 105 that fitsover the rock shaft 101 and is secured thereto by set screws 106, thusfixing said lever 104 to the rock shaft 101 near the middle thereof. Theother arm of said lever 104 extends downward and forward and haspivotally connected to it at 107 the rear end of a link 108, said linkextending forward and being pivotally connected at 109 to a bracket orarm 110 that is adjustably secured by screws 111 to the under face ofthe rocking bar 26, said arm 110 providing a projection rigid with saidbar and extending forward and upward therefrom;

Referring to the operation of the universal bar mechanism when aprinting key lever 29 is depressed it will operate through the link 32,sub-lever 33, link 36 anddriving lever 37 to swing the connected typebar 41 upward and forward away from the pad 48, the driving lever nearthe end of the'movement acting against the pin 41 to drive the type barthrough the center guide into cooperative engagement with the platen orthe paper thereon, all as is well known. Just prior to the engagement ofthe driving lever with the pin 41 the shoulder 37 on said lever" willstrike the universal bar 89 and move it rearward. As a result the bellcrank levers 93 are rocked, and the vertical links 98 are caused todescend as are the rocker arms 100 to which they are attached, thusoscillating the rock shaft 101, further impulse being communicated tosaid rock shaft by the lever 104 through the arm 91. When the rock shaft101 is oscillated the horizontal link 108 is moved forward and the crossbar 26 carrying the escapement dogs 23 and 24 is caused to be rocked toswing the dogs upward, the dog 23 passing out of engagement withtheescapement wheel 18 and the dog 24 into engagement with said wheel. Theoperated position of the parts at this time is ,illustrated in Fig. 4.During this operation the coiled springs 102 are stretched and when thekey is released will operate to restore the universal bar and itsconnected devices to normal position, the dog 24 passing down and out ofthe escapement wheel 18 .and the dog 23 reengaging therewith. As aresult of the described operations a letter space movement of thecarriage is effected under the impulse of the carriage motor. When oneof the shift keys 59 is actuated the set of type bars will be carrieddownward along with the support 39, 44, and at the same time theuniversal bar 89 and its connected devices will move bodily downward,the link 108 swinging about its pivotal connection 109 as a center, thepivotal point ated subsequent to the shift, the universal bar operationwill take place as heretofore described for the lower case position. The

actuated positionzof the universal bar and connected parts when in uppercase position is illustrated in Fig. 3.

In order to actuate the escapement dogs from the space bar mechanism,two arms 112 v (Figs. 1 and 5) are suitably fixed to the under side ofthe rocking bar 26 near its ends, these arms extending forward andupward and terminating in out-turned end portions 113 which underlie thespacing levers 114, so that when the space bar (not shown) connectingthe forward ends of these levers,

is actuated, the levers 114 will swing downward and engage with the ends113, causing a rocking of the bar 26 and a consequent actuation of theescapement dogs. The parts are so proportioned that this operation onlyslightly. affects the universal bar 89.

The back and forth movements of the universal bar 89 are easy andcomparatively free from friction. The horizontal lip or portion of saiduniversal bar is sustained a short distance above the top curved surfaceof the segment 39 and inside the curve thereof out of contact therewithby reason of the fact that said universal bar is prevented from droppingdownward by its own weight around the pivots 92 by the middle pivotalsupport 103, which is lower than the pivotal points 92, these latterbeing in the same horizontal line or level with each other. The downwardtendency of the universal bar 89 because of gravitv is met by the pivot103 on the arm 104, said arm in effect preventing such downward movementof the universal bar. At its ends the universal bar is guided underangularly bent fingers 115 which are fixed by screws 116 to the webs orcross pieces 50.

What we claim as new and desire to secure by Letters Patent, is t 1. Ina typewriting machine, the combination of a shiftable type bar support,type bar actions, a universal bar, three levers mounted to shift withsaid support, the universal bar being directly connected at or near itsends to two of said leversand also connected between its ends to theouter one of said levers, escapement devices, and connections betweensaid levers and certain of said escapement devices.

2. In' a typewriting machine, the combination of a shiftable 'type barsupport, type bar actions, a universal bar, three levers mounted toshift with said support, the universal bar being directly connected toone of said levers near itsmiddle and to the other two levers near itsends, a rock shaft on said support, connections between said levers andsaid rock shaft, and escapement devices, certain of said devices beingoperative from said rock shaft.

3. In a typewriting machine, the combination of a shiftable type barsupport, a universal bar, type bar actions operative thereon, threelevers mounted to shift with said support and to which said universalbar is directly pivotally connected, two of the pivotal points ofconnection being in the same horizontal line and the other pivotal pointof connection being at a different level, and escapement devices,certain of said devices being operatively connected with said levers.

4. In a typewriting machine, the combination of a shiftable type barsegment, a curved universal bar, type bar connections operative thereon,three levers mounted to shift with said segment and to which saiduniversal bar is pivotally connected, two of the pivotal points ofconnection being in the same horizontal line and the other pivotal pointof connection being between the other two and below said horizontalline, and escapement devices, certain of said devices being operativelyconnected with said levers.

5. In a typewriting machine, the combination of a shiftable type barsegment, a curved universal bar, type bar connections operative thereon,three levers mounted to shift with said segment and to which saiduniversal bar is pivotally connected, two of the pivotal points ofconnection being in the same horizontal line and the other pivotal pointof connection being between the other two and below said horizontalline, said universal bar being arranged within the curve of said segmentbut out of contact therewith, guide fingers at the ends of said segmentand overlying'the end portions of said universal bar, and escapementdevices, certain of said devices being operatively connected with saidlevers.

6. In a typewriting machine, the combination of a shiftable segment,levers pivotally supported and shiftable with said segment, -a keyoperated universal bar pivotally'supported by said levers, a rock shaftto which said levers are connected, a rocking bar, escapement dogssupported by said rocking bar, an escapement rack, and con nectionsbetween said rock shaft and said rocking bar.

7. In a typewriting machine, the combirocking bar, an escapement rack,connec-.

tions between said rock shaft and said rockshaft.

9. In a typewriting machine, the combination of a shiftable segment, twobell cranks pivotally supported and shiftable with said segment, auniversal bar pivotally connected with said bell cranks, a rock shaftprovided with crank arms, links connecting said bell cranks with saidcrank arms, a lever fixed to said rock shaft and connected with saiduniversal bar, escapement devices,

and connections between said lever and said escapement devices.

10. In a typewriting machine, the combination of a shiftable segment,brackets thereon, bell pranks pivoted on said brackets, a curveduniversal bar provided near its ends with arms which are pivotallyconnected with said bell cranks, a rock shaft pivoted on said brackets,crank arms on said rock shaft, links connecting said bell cranks withsaid crank arms, a lever fixed to said rock shaft and having a pivotalconnection with said universal bar, escapement devices, a rocking barsupporting part of said escapement devices, and connections between saidrocking bar and said rock shaft.

11. In a typewriting machine, the combination of a shiftable segment,brackets thereon, bell cranks pivoted on said brackets, a curveduniversal bar provided near its ends with arms which are pivotallyconnected with said bell cranks, a rock shaft pivoted on said brackets,crank arms on said rock shaft, links connecting said bell cranks withsaid crank arms, a lever fixed to said rock shaft and having a pivotalconnection with said universal bar, escapement devices, a rocking barsupporting part of said escapement devices, and connections between saidrocking bar and said rock shaft, said connections comprising an armextending from said rocking bar, and a link connecting said last recitedarm with an arm of sald lever.

12. In a typewriting machine, the combination of a shiftable segment;brackets thereon; bell cranks pivoted on said brackets; a curveduniversal bar provided near its ends with arms which are pivotallyconnected with said bell cranks; a rock shaft p1voted on said brackets;crank arms on said rock shaft; links connecting said bell cranks withsaid crank arms; a lever fixed to said rock shaft and having apivotalconnection with said universal bar; escapement devices; a rockingbar supporting part ofsaid escapement devices; connections between saldrocking bar and sald rock shaft, said connections comprlslng an armextending from said rocking bar and a link connecting said last recitedarm with an arm of said lever; spacing bars; and extensions from saidrocking bar against which said spacing bars are adapted to operate.

13. In a typewriting machine, the combination of a shiftable segment, acurved universal bar, bell cranks supported on said segment, the uprightarms of said bell cranks being pivotally connected with said universalbar near its ends, a rock shaft supported from said segment, crank armson said rock shaft substantially parallel with the horizontally disposedarms of said bell cranks, links connecting said horizontally disposedarms with said crank arms, springs connected with said crank arms andtending to turn said rock shaft, a centrally disposed lever fixed tosaid rock shaft and connected at one end to said universal bar, a linkconnected to the other arm of said central lever, escapement devices,and a rocking'bar for supporting part of. said escapement devices, saidrocking bar being provided with an extension to which said last namedlink is connected.

Signed at Bridgeport, in the county of Fairfield, and State ofConnecticut, this 30th day of August A. D. 1915.

HERBERT L. JOHNSON. EDWIN w. JOHNSON.

Witnesses:

MICHAEL J. CLABBY, WILLIAM L. Kmrms.

